Now I installed platformIO and try to compile and upload program to one of my boards.
The board as connected works perfect with the Arduino IDE. I can upload programs from the Arduino IDE. Before trying PlatformIO I made sure Com16 is free.

Com16 is the right port.
I can see that the ESP is being reset.
What ever I do I have not been able to upload the simplest program to the ESP.
I google for this error and found older entries (2018) that say solved in latest software . I assume having the latest platform software. Some of the solutions I did not understand at all,